We discuss the minimal model of “User buys an Item as a gift to another User” scenario; point out false links; try to make another step towards understanding 4NF and 5NF.
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Why Minimal Modeling has no 3-way links
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We discuss the minimal model of “User buys an Item as a gift to another User” scenario; point out false links; try to make another step towards understanding 4NF and 5NF.